Motor drive for a camera

ABSTRACT

A motor drive for a camera has a motor drive system which comprises a motor, a circuit for driving the motor including two switches, means for blocking film transportation in a rewinding direction, a first manually operable member connected to the rewind blocking means and movable between first and second positions, and a second manually operable member for engagement with a supply spool and connected to the motor and movable between first and second positions. One of the two switches in the circuit may be opened and closed in response to movement of the first operable member to its first and second positions, respectively. In the second position of the first operable member, the rewind blocking means is rendered ineffective. The other switch is opened and closed in response to movement of the second operable member to its first and second positions, respectively. In its second position, the second operable member is engageable with the supply spool so that the spool may be rotated by the drive from the motor to take up the film thereon.

United States Patent [191 Sugimori [4 1 Jan. 8, 1974 1 MOTOR DRIVE FOR ACAMERA [75] Inventor: Shiro Sugimori, Tokyo, Japan [73] Assignee: NipponKagaku K.K., Tokyo, Japan 22 Filed: Ju1y13,1972

21 Appl. No.: 271,628

Primary Examiner Robert l l Cireiner Attorney-Fitzpatrick, Cella, Harper& Scinto [57] ABSTRACT A motor drive for a camera has a motor drivesystem which comprises a motor, a circuit for driving the motorincluding two switches, means for blocking film transportation in arewinding direction, a first manually operable member connected to therewind blocking means and movable between first and second positions,and a second manually operable member for engagement with a supply spooland connected to the motor and movable between first and secondpositions. One of the two switches in the circuit may be opened andclosed in response to movement of the first operable member to its firstand second positions, respectively. In the second position of the firstoperable member, the rewind blocking means is rendered ineffective. Theother switch is opened and closed in response to movement of the secondoperable memher to its first and second positions, respectively. In itssecond position, the second operable member is engageable with thesupply spool so that the spool may be rotated by the drive from themotor to take up the film thereon.

PATENIEUJAH 81974 3,783,762

SHEET 1 BF 2 FIG. I

Pmmenm 8mm 3,783,762

SHEEI 20? 2 BACKGROUND OF THE INVENTION l. Field of the Invention Thisinvention relates to a motor drive for a camera, and more particularly,to a motor drive system therein whereby film may be safely andpositively rewound by a drive motor. I

2. Description of the Prior Art In a prior film rewind system, anoperating lever is actuated to rewind a film and the filmrewindingoperation can be effected at any desired time. This system hasbeen disadvantageous in that any inadvertent contact with the operatinglevel might cause the film to be rewound when rewinding is not desired.

SUMMARY OF THE INVENTION connected to the rewind blocking means and ismovable between a first position in which the rewind blocking means iseffective, and a second position in which it prevents the blocking meansfrom interferring with film transportation in the rewind direction. Oneof the two switches in the circuit is movable in response to themovement of the first operable member and is open in the first positionof same, and is closed in the second position thereof. A second manuallyoperable member engages a film supply spool to rotate the spool.. Thesecond operable member is connected to the motor and is movable betweenfirst and second positions. When it is in its second position, thesecond operable member is engaged with the supply spool to rotate it bythe drive from the motor so as to take up the filmon the spool. Theother of the two switches is movable in response to the movement of thesecond operable member and is open in the first position of the secondoperable member and closed in the second position of such 7 member.

According to a feature of the present invention, the

will appreciate that the conception upon which this disclosure is basedmay readily be utilized as a basis for the designing of other structuresfor carrying out the several purposes of the invention. It is important,therefore, that the claims be regarded as including such equivalentconstruction as do not depart from the spirit and scope of theinvention.

BRIEF DESCRIPTION OF THE DRAWINGS A specific embodiment of the inventionhas been chosen for purposes of illustration and description, and isshown in the accompanying drawings, forming a part of the specification,wherein:

FIG. 1 is a schematic illustration of the mechanism and electric circuitof the motor drive system according to the present invention;

FIG. 2 is a diagram illustrating the electric circuit in particular;

FIGS. 3(1), (2) and (3) illustrate the open and closed positions of theplate spring contacts of the film counter portion in the camera;

FIG. 4(1) and (2) illustrate a pawl clutch assembly in the system ofFIG. 1;

FIGS. 5(1), (2) and (3) illustrate the engagement between a filmmagazine spool having projections formed in the lower portion thereofand a motor-driven rewind shaft; and

vFIGS. 6(1) and (2) illustrate the engagement between a film magazinespool having no such projections and a motor-driven rewind shaft.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a drivesource shown as an electric motor 1 has a gear 2 connected thereto. Thegear 2, in tum, is connected via a gear train 3, 4, 5 to a clutch 6,which may be retracted leftwardly out of en- I thereon an integrallyformed ratchet wheel 54. A pawl 9 is secured to the bevel gear 8 bymeans of a stepped screw 56; and a spring is provided to bias the pawlsecond manually operable member may comprise a rotary shaft having atone end thereof coupling means engageable with the supply tool. Thecoupling means is engaged with the supply spool in the second positionof the rotary shaft thereby to transmit the rotation of the rotary shaftto the supply spool. A manually operable lever is connected to therotary shaft to move the shaft between first and second positions; andclutch means 4 are provided between the rotary shaft and the motor, andare adapted to connect them. together only when the rotary shaft hasbeen moved to its second position by the manually operable lever.

There has thus been outlined rather broadly the more important featuresof the invention in order that the detailed description thereof thatfollows may be better understood, and in order that the presentcontribution to the art may be better appreciated.- There are, ofcourse, additional features of the invention that will be describedhereinafter and which will form the subject of the claims appendedhereto. Those skilled in the art 9 into engagement with the ratchetwheel 54. Thus, the clockwise rotation of the bevel gear 8 may betransmitted via the pawl 9 and ratchet wheel 54 to the shaft 57.

Turning back to FIG. 1, a gear 10 is integrally formed with the shaft 57and connected via a gear train 11, 12 and 13 to a coupling 14 which ismounted on a shaft common with the gear 13. The coupling 14 is engagedwith a cameras coupling 15 connected toa take-up spool 201.

A lever 32a and a lever 32b, formed thereon togeether, constitute awell-known arrangement for rotating intermittently the-ratchet wheel 33in clockwise direction. When these levers 32a and 32b are stationary,the lever 32b lies out of the circular path followed by the toothedperiphery of the ratchet wheel 33. A shaft 51 extends through and issecured to the ratchet wheel 33, and a printed plate 37 is securelymounted on the shaft 51. A scale plate 38 is securely mounted at one endof the shaft 51 and cooperates with a fixed index mark 58 to indicatethe length or number of frames of unexposed film. A spiral spring 36 iswound on the shaft 51 normally to impart a counter-clockwise rotationaltorque to the shaft 51. At the other end of the shaft 51 there is fixeda pin 52 perpendicularly thereto, which pin 52 cooperates with a stopmember 53 to block the tendency of the shaft 51 to rotate due to therotational torque imparted thereto by the spring 36. The relativepositions of the scale plate 38 and the stop member 53 are such that amark S on the scale plate 38 is registered with the index mark 58 whenthe pin 52 bears against the stop member 53. In this position, the markS indicates the fact that a film roll has been duly loaded in thecamera.

Switches S3 and S4 are seen adjacent to the printed plate 37 and FIG. 3clearly shows the relation between the printed plate 37 and the switchesS3, S4. As shown, an electrically insulating portion 100 and anelectrically conductive portion 101 are provided on the printed plate37. The switch S3 comprises conductors 110, 111 and the switch S4comprises conductors 111, 112. When the scale plate 38 is positionedwith the mark thereon registered with the index mark, the switches S3and S4 are closed with the conductors 110, 111 and 112 being all incontact with the conductive portion 101 of the plate 37, as shown inFIG. 3(1). As the ratchet wheel 33 is advanced over one tooth by thelevers 32a, 32b, the printed plate 37 assumes the position shown in FIG.3(2), in which the switch S3 remains closed while the switch S4 is openwith the conductor 112 in contact with the insulating portion 100. Theclosed position of the switch S3 and the open position of the switch S4will be maintained irrespective of further rotation of the ratchet wheel33, but when the division 0 onthe scale plate 38 is registered with theindex mark 58, i.e., when the length of the loaded film reaches theterminal end thereof, the printed plate 37 assumes the position, asshown in FIG. 3(3), in which both switches S3 and S4 are open with theconductors 110 and 112 in contact with the insulating portion 100 of theprinted plate.

Referring again to FIG. 1, a member 17 manually operable from outsidethe camera has a slidable rod 18 securely attached thereto, which rod18, in turn, has a member 19 secured thereto and engaged with a rewindrelease button of the camera. A sprocket 200 is rotatable only in thefilm winding direction during a film winding operation, but it is alsorotatable in the opposite direction upon depression of the rewindrelease button 20, although the arrangement therefore is not shown. Themember 18 has a projection 23 secured thereto for rotating a lever 21,one end 35 of which is engaged with the ratchet wheel 33 to block thetendency of the ratchet wheel to be rotated counterclockwise by theforceof the spring 36. A spring 22 is provided to overcome the rotation forceimparted from the ratchet wheel 33 to the lever 21.

A gear 48 is connected to the motor 1- and engages a gear 49, which isrotatably mounted on a shaft having a wonn 50 mounted integrallythereon. The worm 50 is engaged by a' worm wheel 46 having a pawl 45formed integrally therewith. A slidable rewind shaft 44 transmit therotation of the worm wheel 46 to the shaft 44. A coupling 47 is attachedto the upper end of the rewind shaft 44 and is engageable with a supplyspool 202.

Switches S1 and S2 are provided for conductors 120, 121 and 121, 122,respectively. The conductor 121 is movable in response to the movementof the member Fruther provided is a switch S5 for movable conductor 130and a contact 131, and a switch S6 for movable conductor 130 and acontact 132. The conductor 130 is movable in response to theenergization and deenergization of an electromagnet 27, in such a mannerthat the conductor 130 is connected with the contact 132.

upon energization of the magnet 27 and connected with the contact 131upon deenergization of the magnet 27. A push button switch S7, forenergizing the motor drive system, and an electric source E are furtherprovided, as shown.

The motor drive system of the described construction will now bedescribed with respect to the operation thereof. Although this drivesystem is identical with .the conventional one in respect of the filmwinding and shutter release operations, a portion of the systempertaining to the film rewinding operation will be described briefly.Upon energization of the motor 1, the torque thereof is transmitted viagears-2 5, winding torque detection clutch 6, bevel gears 7 8, a pawlclutch comprising pawl 9 and ratchet wheel 54, and gears 10 -13 to thewind coupling 14 thereby to rotate the cameras wind shaft 15 in thewinding-up direction. The rotation of the shaft 57 is not transmitted tothe bevel gear 7 even when the wind-up operation is manually effected bythe use of the cameras wind lever 16 via the pawl clutch comprising pawl9 and ratchet 54.

. and scale plate 38 to effect a corresponding angular roverticallyextends through the worm wheel 46 at the center thereof, and a member40, fixed toan exteriorly operable lever 39, engages a member 41integral with the rewind shaft 44 thereby to impart vertical move- Iment to that shaft. A pawl-43 is integrally formed with the member 41and engageable with'the pawl 45 to tation because these two plates aresecurely mounted on the common shaft 51 with the ratchet wheel 33, andthus the amount of film advanced is indicated by a division of the scaleplate 38 relative to the index mark 58. A rotational torque is appliedto the shaft 51 by the spiral spring 36, and the shaft is thusmaintained in a biased position by the check pawl 35. When the scaleplate 38 assumes its 0 position, upon completion of the picture-takingoperation, the switch S3 is opened (FIG. 3(3)) to open the circuit fromthe electrical source E to the motor 1, so that the motor 1 is notenergized even if the push button switch S7 is closed (see .FIG.-2.). Asthe picture taking operation is completed, the'push button switch S' -isopened. In operation of the film rewinding procedure, when'the member17. is manually moved in the direction indicated by arrow A in FIG. 1,it will raise the cameras rewind release button 20 by means of theconnecting rod 18 and member 19 to permit the film rewinding operationto occur, whereafter the projection 23 will rotate the lever 21 torelease the engagement between the end 35 of this lever and the ratchetwheel 33, thus allowing the ratchet wheel 33, printed plate 37 and scaleplate 38 to be rotated by the spiral spring 36 until the mark 8" on thescale plate 38 returns to its initial position. Thereupon, the switch S4is closed. Then, when the lever 39. is rotated in the directionindicated by arrow B, the rewind shaft 44, integral with the member 41,will be moved upwardly (i.e., in the direction of arrow C) by means ofthe member 40, and the conductor 121, which has been engaged with theconductor 120 will be disengaged therefrom and connected with theconductor 122 to open the switch S1 and close the switch S2, the switchS5 having been closed due to deenergization of the magnet 27, thusforming a reverse rotation circuit which is composed of the electricsource E, switches S4 and S2, motor 1 and switch S5 (FIG. 2). The motorthus starts to revolve in the direction opposite to that during the filmwinding operation, thereby rotating the gears 48, 49, worm 50 and wormwheel 46. As the rewind shaft 44 is further moved up, the pawl 43 of themember 41 is brought into engagement with the pawl 45 of the, worm wheel46 so that the rotation of the worm wheel 46 is transmitted to therewind shaft 44. Thereupon, the coupling 47, attached to the upper endof the rewind shaft 44, is engaged with the supply spool 202 in thecamera to rewind the film. During the reverse rotation of the motor, thetorque thereof is transmitted to the wind-up portion of the camera aswell, but not to the cameras wind shaft because such transmission isinterrupted by the pawl clutch comprising pawl 9 and ratchet wheel 54.

There are two types of film magazine, i.e., one having projectionsformed in the lower portion of the magazine spool and one having no suchprojection. For these two different types of film magazine, FIGS. 5 and6 respectively show the manner in which the coupling 47 is engaged withthe film magazine in the camera. In FIG. 5, which shows a magazine spool80 having projections 59 formed in the lower portion thereof, the pawls60 of the rewind coupling 47 engage these projections 59 to transmit therotation of the rewind shaft 44 to the magazine spool 80. In FIG. 6,which shows a magazine spool 90 having no such projections, members 61,which are pivotally supported on the rewind shaft 44 by stub shafts 63,tend to open outwardly under the force of a compression spring 62, butsuch tendency is blocked by a fixed member 64 of the camera body whenthe rewind shaft 44 is in a downwardly retracted position. When therewind shaft 44 is moved upwardly, the members 61 are allowed to openoutwardly by the force of the compression spring 62 to establish africtional coupling to the magazine spool 90.

In the present invention, the rewind shaft may be engaged with themagazine spool by means of a coupling as shown in either FIG.'5 or 6.

The circuitry of the present invention is shown in FIG. 2 from which itwill be seen that one side of the motor 1 may be connected to one sideof a power source E through switch S, and to the other side throughswitches S6 and S3; and the circuit may be arranged to reverse itsdirection by switches S5 on one side and S2 and S4 on the other. SwitchS7 and solenoid 27 are serially connected and are in parallel with themotor. Thus, switches S4 and S2 are serially connected for connectingthe motor 1 with the electric source E during the rewind operation sothat the switch S4 may be opened and closed by the printed plate 37securely mounted on the common shaft with the ratchet wheel 33 of thefilm counter. The switch S4 is closed only when the mark S on the scaleplate 38 is registered with the index mark, but is open in any otherposition of the scale plate 38. In the closed position of the switch S4,the lever 39 is rotated in the direction of arrow B to raise the member41 by means of the member 40, whereby the member 41 closes the switch S2to nergize the motor 1. Therefore, even if the lever 39 is inadvertentlyactuated during the picture-taking process, no rewind will take place,and thus no failure will arise in the picture-taking.

I believe that the construction and operation of my novel motor drivefor a camera will now be understood, and that its advantages will befully appreciated by those persons skilled in the art.

I claim:

1. A motor-driven film rewind device for a camera comprising a motor (1a circuit including first and second switches (S 5,) connected in serieswith each other for driving said motor when both of said first andsecond switches are closed;

first manually operable means (17, 18, 23) movable between first andsecond positions, said first switch (S.,)'being associated with saidfirst means to be closed when said first means is in second position;

means (200) for preventing transportation of a film in a rewindingdirection when said first means is in said first position and forpermitting film transportation when said first means is in said secondposition; and

second manually operable means (44, 47, 49, 50) engageable with a filmsupply spool (202) and connected to said motor for transmitting drive ofsaid motor to said supply spool to rewind the film on said supply spool,said second means being movable between a first position in which it isdisengaged from said supply spool and a second position in which it isengaged with said supply spool, said second switch being associated withsaid second means to be opened when said second means is in said firstposition and to be closed when said secondmeans is in said secondposition;

whereby when said first means and said second means are positioned intheir respective second positions, said first and second switches areclosed to rewind the film on said supply spool by the rotation of saidmotor.

2. A motor-driven film rewind device according to claim 1, wherein saidsecond manually operable means comprises:

a rotary shaft having at one end thereof coupling means engageable withsaid supply spool, said coupling means being engaged with said supplyspool in the second position of said rotary shaft thereby to transmitthe rotation of said rotary shaftto said supply spool;

a manually operable lever connected to said rotary shaft to move thelatter between first and second positions; and

clutch means provided between said rotary shaft and said motor, saidclutch means being adapted to connect said motor and said rotary shafttogether only when said rotary shaft has been moved to its secondposition by said lever.

3. A motor-driven film rewind device according to claim 1, wherein saidfilm transportation preventing means includes a sprocket.

a film rewinding circuit including first (8,), second:

(8;) and third (S switches connected in series with each other fordriving said motor in the film rewinding direction when said first,second and third switches are closed; 7

a film winding circuit including fourth (S fifth (S and sixth (8,)switches connected in series with each other for driving said motor inthe film winding direction opposite to the film rewinding direction whensaid fourth, fifth and sixth switches are closed; I

film counter mechanism '(33, 38, 32b) movable, in response totransportation of film in the winding direction, from'an initialposition in which no film loaded in the camera is wound, to a terminalposition, in which the loaded film is completely wound, for indicatingthe number of the wound film frames, said counter mechanism actuatingsaid first and said fourth switches so that said first and said fourthswitches are closed when said mechanism is in said initial position,only said rfirstswitch being opened when said mechanism is moved fromsaid initial position and said fourth switch being opened when saidmechanism is in said terminal position;

means for selectively'preventing transportation of a film in therewinding direction and permitting said film transportation;

first manually operable means (17, 18, 23) associated with saidselectively preventing means and said counter mechanism, said firstmanually operable means being movable between a first position, in whichsaid selectively preventing means prevents said film transportation inthe rewinding direction, and a second position in which said selectivelypreventing means permits said film transportation in the rewindingdirection and said counter mechanism is returned to said initialposition;

second manually operable means (39, 44, 47, 46, 50) engageable with afilm supply spool in the camera and connected to said motor fortransmitting drive of said motor in the film rewinding direction to saidsupply spool to thereby rewind the film on said supply spool, saidsecond manually operable means controlling said second and sixthswitches and being movable between a first position, in which saidsecond means is disengaged from said supply spool and said second switchis opened and said sixth switch is closed, and a second position inwhich said second means is engaged with said supply spool and saidsecond switch is closed and said sixth switch is opened; and

means (8,, 27) for selectively closing either said third switch or saidfifth switch, whereby, when said first and said second means are in saidfirst positions, respectively, and said selectively closing means closessaid fifth switch, the film winding operation is effected} and when saidcounter mechanism reaches said terminal position the film windingoperation is stopped, and when said first and said second means are insaid second positions, respectively, and said selectively closing meanscloses said third switch, the film rewinding operation is effected.

5. A motor control mechanism according to claim 4, wherein saidselectively closing means includes a solenoid (27 said solenoid beingassociated with said third and said fifth switches so that duringenergization of said solenoid said third witch is opened and said fifthswitch is closed, and that during deenergization is said solenoid saidthird switch is closed and said fifth switch is opened.

6. A motor control mechanism according to claim 5, wherein saidselectively closing means further includes a seventh switch (5,), saidsolenoid being connected to said seventh switch and said fourth switchso that said solenoid is energized when said seventh and said fourthswitches are closed.

7. A motor control mechanism according to claim 4, wherein said secondmanually operable means comprises: a

a rotary shaft having at one end thereof coupling means engageable withsaid supply spool, said coupling means being engaged with said supplyspool in the second position of said rotary shaft thereby to transmitthe rotation of said rotary shaftto said supply spool; 7 a manuallyoperable lever connected to said rotary shaft to move the latter betweenfirst and second positions; and clutch means provided between saidrotary shaft and said motor, said clutch means being adapted to connectsaid motor and said rotary shaft together only when said rotary shafthas been moved to its second positionby said lever.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No.3,783,762 Dated January- '8 I 74 I SHIIIRO sUcIMoRI l t is certifiedthat error appears in the above-identified patent andthat said LettersPatent are hereby corrected as shown below:

Front page, below "[2l] Appl. No.: 271,628", insert [30] 2 ForeignApplication Priority Data August 9, l97l Japan 46/600 73 Column 1, line50, change "supply tool" to'' supply spool I Column 2, line 22, change"FIIICL" to FIGSQ'f". Column 4, line 9., change "Fruther" to FurtherColumn 6, line 4, change "nergize" to energize ---7 line 16, change"(S4,S to (SL QS Signed and sealed this 11th day of 'JunelQ'Zh.

(SEAL) Attest:

EDWARD M.FLETCHER,JR. c. MARSHALL DANN Attesting Officer Commissioner ofPatents FORM Q'F Q uscoMM-oc ware-Pu I UNITED STATES PATENT OFFICECERTIFICATE OF CORRECTION Patent No. 3,783,762 Dated January 8, 1974Invento HIRO SUGIMORI It is certified that error appears in theabove-identified patent andthat said Letters Patent are hereby correctedas shown below:

Front page, below "[21] Appl. No.: 271,628", insert [30] ForeignApplication Priority Data 7 August 9,. 1971 Japan 46/6007 3 Column l,line 50, change "supply tool" to supply spool I I Column 2, line 22,change "FIG;" to FIGS. Column 4, line 9 change "Fruther" to FurtherColumn 6,- line 4, change "nergize" to energize line 16, change "(S ,'Sto (SI S Signed and sealed this 11th day of June 1971;.

(SEAL) Attest:

EDWARD M.FLETCHER,JR. C. MARSHALL DANN Attesting Officer 7 ACommissioner of Patents

1. A motor-driven film rewind device for a camera comprising a motor(1); a circuit including first and second switches (S4, S1) connected inseries with each other for driving said motor when both of said firstand second switches are closed; first manually operable means (17, 18,23) movable between first and second positions, said first switch (S4)being associated with said first means to be closed when said firstmeans is in second position; means (200) for preventing transportationof a film in a rewinding direction when said first means is in saidfirst position and for permitting film transportation when said firstmeans is in said second position; and second manually operable means(44, 47, 49, 50) engageable with a film supply spool (202) and connectedto said motor for transmitting drive of said motor to said supply spoolto rewind the film on said supply spool, said second means being movablebetween a first position in which it is disengaged from said supplyspool and a second position in which it is engaged with said supplyspool, said second switch being associated with said second means to beopened when said second means is in said first position and to be closedwhen said second means is in said second position; whereby when saidfirst means and said second means are positioned in their respectivesecond positions, said first and second switches are closed to rewindthe film on said supply spool by the rotation of said motor.
 2. Amotor-driven film rewind device according to claim 1, wherein saidsecond manually operable means comprises: a rotary shaft having at oneend thereof coupling means engageable with said supply spool, saidcoupling means being engaged with said supply spool in the secondposition of said rotary shaft thereby to transmit the rotation of saidrotary shaft to said supply spool; a manually operable lever connectedto said rotary shaft to move the latter between first and secondpositions; and clutch means provided between said rotary shaft and saidmotor, said clutch means being adapted to connect said motor and saidrotary shaft together only when said rotary shaft has been moved to itssecond position by said lever.
 3. A motor-driven film rewind deviceaccording to claim 1, wherein said film transportation preventing meansincludes a sprocket.
 4. A motor control mechanism for a camera in whichthe film winding and rewinding operations are effected by a drive motor,comprising: a reversible motor (1); a film rewinding circuit includingfirst (S4), second (S2) and third (S5) switches connected in series witheach other for driving said motor in the film rewinding direction whensaid first, second and third switches are closed; a film winding circuitincluding fourth (S3), fifth (S6) and sixth (S1) switches connected inseries with each other for driving said motor in the film windingdirection opposite to the film rewinding direction when said fourth,fifth and sixth switches are closed; film counter mechanism (33, 38,32b) movable, in response to transportation of film in the windingdirection, from an initial position in which no film loaded in thecamera is wound, to a terminal position, in which the loaded film iscompletely wound, for indicating the number of the wound film frames,said counter mechanism actuating said first and said fourth switches sothat said first and said fourth switches are closed when said mechanismis in said initial position, only said first switch being opened whensaid mechanism is moved from said initial position and said fourthswitch being opened when said mechanism is in said terminal position;means for selectively preventing transportation of a film in therewinding direction and permitting said film transportation; firstmanually operable means (17, 18, 23) associated with said selectivelypreventing means and said counter mechanism, said first manuallyoperable means being movable between a first position, in which saidselectively preventing means prevents said film transportation in therewinding direction, and a second position in which said selectivelypreventing means permits said film transportation in the rewindingdirection and said counter mechanism is returned to said initialposition; second manually operable means (39, 44, 47, 46, 50) engageablewith a film supply spool in the camera and connected to said motor fortransmitting drive of said motor in the film rewinding direction to saidsupply spool to thereby rewind the film on said supply spool, saidsecond manually operable means controlling said second and sixthswitChes and being movable between a first position, in which saidsecond means is disengaged from said supply spool and said second switchis opened and said sixth switch is closed, and a second position inwhich said second means is engaged with said supply spool and saidsecond switch is closed and said sixth switch is opened; and means (S7,27) for selectively closing either said third switch or said fifthswitch, whereby, when said first and said second means are in said firstpositions, respectively, and said selectively closing means closes saidfifth switch, the film winding operation is effected, and when saidcounter mechanism reaches said terminal position the film windingoperation is stopped, and when said first and said second means are insaid second positions, respectively, and said selectively closing meanscloses said third switch, the film rewinding operation is effected.
 5. Amotor control mechanism according to claim 4, wherein said selectivelyclosing means includes a solenoid (27), said solenoid being associatedwith said third and said fifth switches so that during energization ofsaid solenoid said third witch is opened and said fifth switch isclosed, and that during deenergization is said solenoid said thirdswitch is closed and said fifth switch is opened.
 6. A motor controlmechanism according to claim 5, wherein said selectively closing meansfurther includes a seventh switch (S7), said solenoid being connected tosaid seventh switch and said fourth switch so that said solenoid isenergized when said seventh and said fourth switches are closed.
 7. Amotor control mechanism according to claim 4, wherein said secondmanually operable means comprises: a rotary shaft having at one endthereof coupling means engageable with said supply spool, said couplingmeans being engaged with said supply spool in the second position ofsaid rotary shaft thereby to transmit the rotation of said rotary shaftto said supply spool; a manually operable lever connected to said rotaryshaft to move the latter between first and second positions; and clutchmeans provided between said rotary shaft and said motor, said clutchmeans being adapted to connect said motor and said rotary shaft togetheronly when said rotary shaft has been moved to its second position bysaid lever.